My CB installation went pretty crunchy and bangy on me, so now I have Oneiric installed. I knew I wouldn't be happy with Gnome Shell and Unity for various reasons, so I looked into some Gnome derivatives.
Cinnamon (or cimet as I like to call it xD cimet means cinnamon in Serbian) is like a stripped down Gnome 2 pretty much. A lot simpler than even XFCE. All I have to say is try it, it won't dissapoint (obviously not perfect).
Cinnamon theme: Eleganse [link]
GTK and Mutter/Metacity/Muffin theme: Orion [link]
Icons: Faenza [link]
Wallpaper: Relax [link]
AWN on the bottom.